Patent US5192297A successfully refreshed from Google Patents.
US5192297A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for placement and implantation of a stent
Assignee: Medtronic Inc
•
Filing: 1991-12-31
•
Granted: 1993-03-09
•
Expires: 2011-12-31
Abstract
Abstract A stent delivery system and method in which stent is routed to a desired position within a subject's vessel by means of a guiding catheter and dilation balloon carried by the guiding catheter proximally with respect to the stent is then moved into a position within the stent so as to expand the stent radially for implantation.
Inventors
- 👤 Vincent W. Hull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:40
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/95
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
140 words
Apparatus for placement and implantation of a stent, the apparatus comprising in combination: a catheter having proximal and distal ends, an elongate cylindrical outer sheath enclosing a distal portion of the catheter, a balloon on the catheter being adapted for inflation and deflation in site, a radially self-expandable stent of generally cylindrical configuration carried coaxially on the catheter in a distal position with respect to the balloon and enclosed within the sheath, and means for distally ejecting the stent from the sheath, whereby the stent may be positioned at a selected implant site by placement of the distal end of the catheter and ejected out of the sheath in a distal direction to position it at the selected site followed by insertion of the balloon coaxially in the stent and expansion thereof to implant the stent at the selected site.
Claim 2
Dependent Claim
140 words
Apparatus for placement and implantation of a stent, the apparatus comprising in combination: a catheter having proximal and distal ends, an elongate cylindrical outer sheath enclosing a distal portion of the catheter, a balloon on the catheter being adapted for inflation and deflation in site, a radially self-expandable stent of generally cylindrical configuration carried coaxially on the catheter in a distal position with respect to the balloon and enclosed within the sheath, and means for distally ejecting the stent from the sheath, whereby the stent may be positioned at a selected implant site by placement of the distal end of the catheter and ejected out of the sheath in a distal direction to position it at the selected site followed by insertion of the balloon coaxially in the stent and expansion thereof to implant the stent at the selected site.
Claim 3
Dependent Claim
14 words
The apparatus of claim 1 in which the stent is comprised of polymeric material.
Claim 4
Dependent Claim
15 words
The apparatus of claim 1 in which the outer sheath is comprised of polymeric material.
Claim 5
Dependent Claim
11 words
The apparatus of claim 3 in which the material is PTFE.
Claim 6
Dependent Claim
36 words
The apparatus of claim 1 wherein the sheath is open at a distal end and the stent is ejected from the open end of the sheath by longitudinal motion of the sheath relative to the stent.
Claim 7
Independent Claim
74 words
A method of implanting a radially expandable stent, comprising the following sequence of steps: placing a radially self-expandable stent on a balloon catheter on the distal side of the balloon; positioning the catheter to place the stent proximate a selected implantation site; ejecting the stent from the catheter at the site; positioning the balloon coaxially within the ejected stent; inflating the balloon to implant the stent; deflating the balloon, and removing the balloon catheter.
Claim 8
Independent Claim
74 words
A method of implanting a radially expandable stent, comprising the following sequence of steps: placing a radially self-expandable stent on a balloon catheter on the distal side of the balloon; positioning the catheter to place the stent proximate a selected implantation site; ejecting the stent from the catheter at the site; positioning the balloon coaxially within the ejected stent; inflating the balloon to implant the stent; deflating the balloon, and removing the balloon catheter.
Claim 9
Independent Claim
132 words
A method of implanting a radially expandable stent comprising: providing a balloon catheter having a radially self-expandable stent positioned coaxially on the catheter in a distal position with respect to the balloon, the balloon and stent being enclosed within an elongate sheath member, positioning the stent proximate a selected implantation site, ejecting the stent from the sheath by moving the sheath member in a proximal direction while allowing the stent to move distally out of the sheath into position at the selected site, positioning the balloon within the ejected stent by moving the balloon in a distal direction out of the sheath and into co-axial relation within the stent, inflating the balloon to implant the stent, deflating the balloon and withdrawing it back in the sheath, and removing the sheath and catheter.
Claim 10
Independent Claim
132 words
A method of implanting a radially expandable stent comprising: providing a balloon catheter having a radially self-expandable stent positioned coaxially on the catheter in a distal position with respect to the balloon, the balloon and stent being enclosed within an elongate sheath member, positioning the stent proximate a selected implantation site, ejecting the stent from the sheath by moving the sheath member in a proximal direction while allowing the stent to move distally out of the sheath into position at the selected site, positioning the balloon within the ejected stent by moving the balloon in a distal direction out of the sheath and into co-axial relation within the stent, inflating the balloon to implant the stent, deflating the balloon and withdrawing it back in the sheath, and removing the sheath and catheter.
References Cited (Backward Citations)
US4787899A
Cited
US4732152A
Cited
US4733665A
Cited
US4733665C2
Cited
US4733665B1
Cited
US4878906A
Cited
US4886062A
Cited
US4998539A
Cited
US5019090A
Cited
US5019085A
Cited
US4990155A
Cited
US4976690A
Cited
US5108416A
Cited
US5090422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-03-08 | 1996-09-07 | 1997-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-03-08 | 2000-09-07 | 2001-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-03-08 | 2004-09-07 | 2005-03-09 | $7700.00 | Window Closed / Lapsed |